synastry

English

From Ancient Greek συναστρία (sunastría, “conjunction of the stars”).

synastry (usually uncountable, plural synastries)

(astrology) concurrence of the position or influence of stars
(by extension) similarity of condition, fortune, etc., as prefigured by astrological calculation
- 1860-1867, John Lothrop Motley, History of the United Netherlands
  Born in the same day of the month and hour of the day with the Queen, but two years before her birth, the supposed synastry of their destinies might partly account, in that age of astrological superstition, for the influence which he perpetually exerted.

astral conjunction